Mia is a killer with guarantees with a very heavy secret: transsexual, it discovers that she procreated - in her ancient life - several children. It receives one day a letter of its ex which announces him that it is dying from a cancer and that it needs him - or of her to be in charge of it in its death. Mia leaves then towards the small village where they live and makes amazing meetings there... http://www.voseries.com/hit-and-miss/2097-hit-and-miss-saison-1-vostfr-rs-multiupload.html

Besides that: Its about a transsexual hitman, that finds out she has a son. not several children. The mother of three (one of which is the assasins) dies and requests that she takes care of them.
The series then progresses to show the ups and downs in a person from the fringes of society take an active part in daily and social setting.